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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JUKRGS4APFPPGODHQMKCQGOHSKEAA3B2/?format=api",
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    "message_id": "851835474.267674.1288550906331.JavaMail.root@sz0126a.emeryville.ca.mail.comcast.net",
    "message_id_hash": "JUKRGS4APFPPGODHQMKCQGOHSKEAA3B2",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/H2YNLO4YXQPQX5OT5HZONMWJF22TCDGN/?format=api",
    "sender": {
        "address": "w7lrd (a) comcast.net",
        "mailman_id": "717aa2a241704c7497e9abd8c983f6b7",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/717aa2a241704c7497e9abd8c983f6b7/emails/?format=api"
    },
    "sender_name": "Bob- W7LRD",
    "subject": "[amsat-bb] Re: AO-7 Mode A antennas",
    "date": "2010-10-31T18:48:26Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/H2YNLO4YXQPQX5OT5HZONMWJF22TCDGN/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\n\nMy 10M antenna is a 4 element quad which is part of a 10/15/20 M quad.  I have noticed since the days of RS10/15 etc that the reception is much better off the back  on 10M.  If I remember (not sure) it is cut for the lower part of 10M, so at 29.45 either the reflector is acting like a director or the first director is acting like a reflector.  In any event when I operate mode A I  always aim the \"back\" to the satellite, there is a  significant difference in reception between the front and back.  So if you're  using a multi band beam of some sort you might try \"flipping \" it around and see how it works.  At one time I built a horizontal 10M loop hanging from a pole, then later added a reflector a few feet below it, essentially a 2 element round quad looking up.  I would switch between the horiz. quad and the round quad depending on what the elevation was.  Yes indeed those RS days were the good old days.  I enjoyed and learned a lot back then. \n\n\n\n73 Bob W7LRD \n\n\n.----- Original Message ----- \nFrom: \"John Neeley\" <[email protected]> \nTo: \"amsat-bb\" <[email protected]> \nSent: Saturday, October 30, 2010 8:52:43 AM \nSubject: [amsat-bb]  AO-7 Mode A antennas \n\nI notice, looking at the logbook on the AO-7 website that the Europeans utilize \nMode A alot more than use here in NA.  Since the downlink frequency is in the \nupper 10 meter band, and I wondering what antenna they are using for receive?  I \nhave tried dipoles, horizontal loops, G5RV, etc to pretty much zero luck in \nhearing the bird, even with close passes. \n\nAny info would be appreciated.. \n\nJohn W6ZKH \n_______________________________________________ \nSent via [email protected]. Opinions expressed are those of the author. \nNot an AMSAT-NA member? Join now to support the amateur satellite program! \nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb \n",
    "attachments": []
}